lf-loops.zip - Article on remotely tuned LF receiving loops by K0LR. Windows Write document w/pix. PKZ 1.10 Feb. 95 LOWDOWN.
hooploop.zip - John Hoopes' article on the Hoop Loop LF receiving antenna, Dec. 1992 LOWDOWN; .TXT and .PCX file; 281K unzipped.
vlf_elf_.txt - Brief bibliography of LF-related topics. From Michael Stein, UCLA, via Internet.
part15_s.txt - Part 15 Federal Communications Commission rules governing unlicensed low power transmissions. This is an abridged version covering only the most relevant sections for home experimenters. Prepared September, 1994, but these sections have not changed since. Both longwave and mediumwave.
vlfstory.zip - "A VLF Listener's Story" by Steve McGreevy, an exciting account of Natural Radio monitoring, encompassing whistlers, auroral emissions, red sprites and other mysteries of VLF. Explains fundamentals of whistler receivers and antennas.
whistler.zip - John Davis' IC-based whistler receiver design; text and two .pcx illustrations. 40K unzipped.
whistler.txt - Text form of above.
whisrec.gif - Diagram from above article.
whismod.gif - Another diagram.
lattice.txt - From VE2IQ. Explanation of lattice coding, a technique for improving Phase Shift Keying error rate.
dsp59mod.zip - From K0LR. Unzips to 474k Windows Write file with illustrations. Modification to Timewave DSP-59+ digital signal processing filter; external oscillator allows lower CW center freq, makes center freq tunable, narrows bandwidth. Dec. 95 LOWDOWN.
unipre1.zip - Universal LF/MF antenna preamplifier by K0LR, updated version from Aug. 95 LOWDOWN. Works with loop or whip antennas, LF or MF. Windows Write document with schematic. Note: picture may be clearer if you have CorelDraw installed.
gnd_isol.zip - Jim Hagan's article (.txt) and schematics (.pcx) on isolating remote antenna preamps from ground loop noise pickup. PKZip 2.04. 240 kbytes expanded.
